CN106025546B - The device of using plasma modulation enhancing miniaturization omni-directional antenna electromagnetic radiation - Google Patents
The device of using plasma modulation enhancing miniaturization omni-directional antenna electromagnetic radiation Download PDFInfo
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- CN106025546B CN106025546B CN201610356451.8A CN201610356451A CN106025546B CN 106025546 B CN106025546 B CN 106025546B CN 201610356451 A CN201610356451 A CN 201610356451A CN 106025546 B CN106025546 B CN 106025546B
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- vacuum chamber
- antenna
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- electromagnetic radiation
- plasma
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
Abstract
The device of using plasma modulation enhancing miniaturization omni-directional antenna electromagnetic radiation, it is related to the technical field of low temperature plasma, in order to solve the problems, such as that conventional metals conductor antenna cannot realize that high-gain and miniaturization, plasma antenna gain is small and noise is big simultaneously.Metal antenna is fixed on the bottom end of coaxial feeder, the output end of the top connected vector Network Analyzer of coaxial feeder；The top of vacuum chamber ontology is provided with air inlet and air outlet, the bottom end of vacuum chamber ontology is fixed with vacuum pump group, discharge electrode is wrapped on the side wall of vacuum chamber ontology, working gas is full of in vacuum chamber ontology, one end of discharge electrode is grounded, the output end of the other end connection radio frequency power source of discharge electrode；The lower part of coaxial feeder and metal antenna are each attached in vacuum chamber ontology, and the axle center of coaxial feeder is overlapped with the center line of vacuum chamber ontology.Radiation gain height of the invention, adjustable gain, small in size, noise is small, and the present invention is suitable for the occasion using antenna.
Description
Technical field
The present invention relates to the technical fields of low temperature plasma, and in particular to using plasma modulation enhancing antenna electromagnetism
The technology of radiation.
Background technique
Antenna is as the important component for emitting and receiving signal in wireless communication system, and the performance of antenna is largely
On decide the superiority and inferiority of communication system, therefore have important practical significance to the optimizing research of antenna performance.The gain of antenna
This important characterisitic parameter has been largely fixed its effective coverage distance, including communication distance, reconnaissance range, interference
Distance and direction finding distance etc., under identical condition, antenna gain is higher, and coverage distance is remoter, otherwise coverage distance is got over
Closely.
In order to improve antenna gain, traditional method is realized using array antenna and bigbore reflector antenna,
These methods have been achieved for being widely applied in a communications system.The unit group battle array of common printed antenna may be implemented higher
Gain characteristic, but this mutual coupling that not only to overcome the problems, such as to influence antenna overall performance but also needs to design extremely complex
Feeding network design, and have biggish loss.Reflector antenna equally possesses the characteristics of high-gain, and size is generally
More than ten or even tens wavelength, although high gain and high efficiency characteristic may be implemented, its biggish size makes its pole in war
It is easily found, this disadvantage limits its application.Therefore under the premise of keeping higher gain, how to make the structure of antenna more
Add simple, and realizes that miniaturization is to merit attention and urgent problem to be solved.In particular with satellite, aircraft, battlebus, warship
The development of the mobility optimal in structure such as ship improves miniaturization, the integrated requirement of wireless communication and electronic system, increasingly with machine
For carrying antenna, due to being severely restricted on aircraft for installing the space of antenna, usually to the size of antenna and shape
Shape all can be clearly required and be limited, and it is low etc. that antenna miniaturization techniques are faced with limited antenna gain, sensitivity and resolution ratio
Problem, in order to improve antenna gain on the basis of antenna miniaturization, needs to pay high under the limitation of numerous current conditions
Cost and huge cost, and often up to less than ideal effect, therefore improve by special technique means antenna increasing
Benefit is of great significance for promoting the development of wireless communication technique and meeting special military strategy demand etc..
In recent years, plasma science and deepening continuously for technical research promote plasma technique in wireless communication neck
It flourishes in domain.More representational work is plasma antenna technology, and plasma antenna is using plasma
Instead of the antenna of common metal conduction and radiated electromagnetic wave, it is special that good conductor is presented using electromagnetic wave of the plasma to certain frequency
Property and be made.From the point of view of present development, there is also two main disadvantages for plasma antenna.Firstly, with metal antenna phase
Than the gain of plasma antenna is smaller, and covering power is relatively limited；Secondly as plasma antenna relies on plasma
Carry out transceiving electromagnetic signals, the influence of electronics warm-up movement in subject plasma, therefore the noise of antenna is larger.The two aspects are shadows
Ring the principal element of plasma antenna application and the critical issue of current plasma antenna research.
Summary of the invention
The present invention is to solve conventional metals conductor antenna and cannot realize high-gain and miniaturization, plasma day simultaneously
The problem that line gain is small and noise is big, to provide using plasma modulation enhancing miniaturization omni-directional antenna electromagnetic radiation
Device.
The device of using plasma modulation enhancing miniaturization omni-directional antenna electromagnetic radiation of the present invention, including it is small
Type omni-directional antenna system and plasma modulation enhancing electromagnetic radiation system；
Minimizing omni-directional antenna system includes metal antenna, coaxial feeder and vector network analyzer；
Metal antenna is fixed on the bottom end of coaxial feeder, the top connected vector Network Analyzer of coaxial feeder it is defeated
Outlet；
Plasma modulation enhancing electromagnetic radiation system includes vacuum chamber, discharge electrode and radio frequency power source；
Vacuum chamber includes vacuum chamber ontology and vacuum pump group, and the top of vacuum chamber ontology is provided with air inlet and air outlet,
The bottom end of vacuum chamber ontology is fixed with vacuum pump group；
Discharge electrode is wrapped on the side wall of vacuum chamber ontology, and working gas is full of in vacuum chamber ontology, discharge electrode
One end ground connection, the output end of the other end connection radio frequency power source of discharge electrode；
The lower part of coaxial feeder and metal antenna are each attached in vacuum chamber ontology, the axle center of coaxial feeder and vacuum
The center line of chamber ontology is overlapped.
The beneficial effects of the present invention are: (1) enhances antenna electromagnetic radiation compared to dielectric overlay or di-lens method etc.
Mode, enhancing electromagnetic irradiating device is modulated by plasma, so that antenna is under identical transmission power, the radiation of antenna increases
The available raising of benefit, yield value reach several decibels to tens decibels；(2) compared to utilization array antenna and bigbore reflection
Surface antenna, the mode of using plasma modulation enhancing can effectively reduce antenna volume in the present invention, reduce radar cross section,
A possibility that reduction is found by enemy；(3) compared to plasma antenna, present invention preserves conventional metals conductor antenna or
The advantages such as low noise, the high-gain of PCB antenna, and the present invention further improves antenna gain；(4) plasma
Body modulation enhancing antenna electromagnetic radiation system can be closed and be opened at any time according to antenna real work demand；(5) it is penetrated by control
Frequency power source can arbitrarily adjust the gain of the device of using plasma modulation enhancing miniaturization omni-directional antenna electromagnetic radiation
Value；(6) plasma that plasma modulation enhancing electromagnetic irradiating device generates has enemy's detection electromagnetic wave signal and inhales
Receive, scattering process, can it is a degree of reduce antenna radar cross section, realize the stealthy function of antenna.
The present invention is suitable for the occasion using antenna.
Detailed description of the invention
Fig. 1 is the modulation enhancing miniaturization omni-directional antenna electromagnetic radiation of using plasma described in specific embodiment one
Device structural schematic diagram；
Fig. 2 is the gain curve figure that omni-directional antenna is minimized under the different discharge powers in specific embodiment nine.
Specific embodiment
Specific embodiment 1: present embodiment is illustrated referring to Fig.1, using plasma described in present embodiment
The device of modulation enhancing miniaturization omni-directional antenna electromagnetic radiation, including miniaturization omni-directional antenna system and plasma modulation
Enhance electromagnetic radiation system；
Minimizing omni-directional antenna system includes metal antenna 1, coaxial feeder 2 and vector network analyzer 3；
Metal antenna 1 is fixed on the bottom end of coaxial feeder 2, the top connected vector Network Analyzer 3 of coaxial feeder 2
Output end；
Plasma modulation enhancing electromagnetic radiation system includes vacuum chamber, discharge electrode 4 and radio frequency power source 5；
Vacuum chamber includes vacuum chamber ontology 6 and vacuum pump group 9, and the top of vacuum chamber ontology 6 is provided with air inlet 7 and outlet
Mouth 8, the bottom end of vacuum chamber ontology 6 is fixed with vacuum pump group 9；
Discharge electrode 4 is wrapped on the side wall of vacuum chamber ontology 6, one end of discharge electrode 4 ground connection, discharge electrode 4 it is another
The output end of one end connection radio frequency power source 5；
The lower part of coaxial feeder 2 and metal antenna 1 are each attached in vacuum chamber ontology 6, the axle center of coaxial feeder 2 with
The center line of vacuum chamber ontology 6 is overlapped.
Plasma modulation enhancing electromagnetic radiation system, enables to generate plasma, discharge electrode 4 inside vacuum chamber
Electric discharge device is formed with radio frequency power source 5, can be used by direct-current discharge, alternating current discharge, pulsed discharge and its is based on the principle of similitude
Other discharge types to develop, wherein the discharge electrode or discharging antenna of electric discharge device are placed in the internal or external of vacuum chamber,
Connect by feed line with radio frequency power source, the parameters such as voltage, electric current, power by adjusting radio frequency power source realize equity from
The control and holding of daughter parameter.The material of 6 side wall of vacuum chamber ontology is quartz glass.
Specific embodiment 2: present embodiment is to modulate to enhance to using plasma described in specific embodiment one
The device of miniaturization omni-directional antenna electromagnetic radiation is described further, and in present embodiment, vacuum chamber, which is additionally provided with, to concave
Sunken chamber 10, the open side of chamber are located at the top of vacuum chamber, and the chamber 10 being recessed inwardly is seperated knot with vacuum chamber
Structure and sealed connection, the lower part of coaxial feeder 2 and metal antenna 1 are each attached in the chamber of sunken inside.
The shape of vacuum chamber ontology 6 is unlimited, is cylinder, elliptical cylinder-shape, triangle cylindricality, cuboid, the square bodily form, ball
The shape of shape, elliposoidal etc., the chamber 10 being recessed inwardly is unlimited, is cylinder, elliptical cylinder-shape, triangle cylindricality, cuboid, just
Cube shape, spherical shape, elliposoidal etc..
Specific embodiment 3: present embodiment is to modulate to enhance to using plasma described in specific embodiment two
The device of miniaturization omni-directional antenna electromagnetic radiation is described further, tight using sealant or machinery in present embodiment
It is fixedly mounted with and sets the chamber 10 that will be recessed inwardly and vacuum chamber sealed connection.
Specific embodiment 4: present embodiment is modulated to using plasma described in specific embodiment two or three
The device of enhancing miniaturization omni-directional antenna electromagnetic radiation is described further, in present embodiment, the chamber 10 that is recessed inwardly
It is realized using quartz glass tube.
Specific embodiment 5: present embodiment is to using plasma described in specific embodiment one, two or three
The device of modulation enhancing miniaturization omni-directional antenna electromagnetic radiation is described further, in present embodiment, the metal antenna 1
It is realized using monopole antenna, dipole antennas or PCB antenna.
Specific embodiment 6: present embodiment is to using plasma described in specific embodiment one, two or three
The device of modulation enhancing miniaturization omni-directional antenna electromagnetic radiation is described further, and in present embodiment, discharge electrode 4 is used
Hollow copper tubing is realized.
Specific embodiment 7: present embodiment is to modulate to enhance to using plasma described in specific embodiment six
The device of miniaturization omni-directional antenna electromagnetic radiation is described further, in present embodiment, water flowing in hollow copper tubing, using water
It is cold that hollow copper tubing is cooled down.
Specific embodiment 8: present embodiment is to using plasma described in specific embodiment one, two or three
The device of modulation enhancing miniaturization omni-directional antenna electromagnetic radiation is described further, in present embodiment, in vacuum chamber ontology 6
Full of argon gas.
Specific embodiment 9: illustrating present embodiment referring to Fig. 2, present embodiment is to specific embodiment one
The device of the using plasma modulation enhancing miniaturization omni-directional antenna electromagnetic radiation is described further, this embodiment party
In formula, metal antenna 1 is dipole antennas, including the round plate copper sheet of two diameter of phi=20mm, thickness d=1mm, two
Copper sheet is respectively welded at diameter of phi=4mm, the center copper wire and external shielding layer of 2 bottom end of coaxial feeder of length L=100mm
On, the other end of coaxial feeder 2 collectively forms miniaturization omnidirectional antenna to connected vector Network Analyzer for connector
System.Plasma modulation enhancing antenna electromagnetic irradiating device, including vacuum chamber, discharge electrode 4 and radio frequency power source 5, very
Plenum chamber is made of the cylinder quartz glass tube that outer diameter is Φ=80mm, quartz glass thickness of pipe wall d=5mm, high h=150mm, on
Lower both ends are No. 304 stainless steel end caps, and utilize epoxy glue seal, open one diameter of phi=40mm circular hole at upper end cover center,
Top welds kf40 and leads directly to standard interface, and for placing outer diameter Φ=30mm, it is complete to constitute miniaturization for the quartz glass tube of thick 2mm
To antenna placed cavity, quartz glass tube other end closing open at one end is similar to cuvette construction, wherein glue outside open at one end
One No. 304 stainless steel fixed rings are filled, are tightly connected antenna placed cavity fixed ring and vacuum chamber using cushion rubber and clip, upper end
There are two diameter of phi=6mm gas nozzles, respectively air inlet away from symmetrically opening at the position d=26mm of center for stainless steel end cap
7 and gas outlet 8, argon gas is passed through as working gas by air inlet 7, gas outlet 8 is for deflating.Lower end stainless steel end cap is at center
Position is provided with one diameter of phi=35mm circular hole, and welding kf40 leads directly to standard interface on circular hole, is connected by vacuum corrugated pipe true
Empty pump group 9.Discharge electrode 4 and radio frequency power source 5 form inductive coupling plasma generator, and hollow copper tubing is as electric discharge electricity
Pole winds the number of turns n=3, outer diameter Φ=10mm, the hollow copper tubing of internal diameter Φ=8mm on the outside of the quartz glass tube of vacuum chamber；
Water flowing is for cooling down hollow copper tubing inside hollow copper tubing；One end of discharge electrode is strictly grounded, and the other end connects radio frequency
Power source 5.When work, the frequency of radio frequency power source 5 is 13.56MHz, and power is adjustable in the range of 0~2000W, radio frequency function
Rate source 5 is ionized vacuum chamber internal gas part to generate required plasma.
Fig. 2 is the miniaturization omni-directional antenna gain S that present embodiment obtains21The change of the power of radio frequency power source 5
Change situation, present embodiment miniaturization omnidirectional antenna works under 1.2GHz frequency, by adjusting 13.56MHz radio-frequency power
The discharge power in source 5 obtains the miniaturization omni-directional antenna gain S under a certain air pressure21With the situation of change of discharge power, when
When the discharge power of 13.56MHz radio frequency power source 5 reaches 40w or more, omni-directional antenna gain S is minimized21Than not etc.
Yield value when gas ions modulation enhancing improves 5dB~8dB, and has excellent raising gain in wider discharge power
Effect.
Claims (7)
1. the device of using plasma modulation enhancing miniaturization omni-directional antenna electromagnetic radiation, which is characterized in that including small-sized
Change omni-directional antenna system and plasma modulation enhancing electromagnetic radiation system；
Minimizing omni-directional antenna system includes metal antenna (1), coaxial feeder (2) and vector network analyzer (3)；
Metal antenna (1) is fixed on the bottom end of coaxial feeder (2), the top connected vector network analysis of coaxial feeder (2)
The output end of instrument (3)；
Plasma modulation enhancing electromagnetic radiation system includes vacuum chamber, discharge electrode (4) and radio frequency power source (5)；
Vacuum chamber includes vacuum chamber ontology (6) and vacuum pump group (9), the top of vacuum chamber ontology (6) be provided with air inlet (7) and
Gas outlet (8), the bottom end of vacuum chamber ontology (6) are fixed with vacuum pump group (9)；
Discharge electrode (4) is wrapped on the side wall of vacuum chamber ontology (6), one end ground connection of discharge electrode (4), discharge electrode (4)
The other end connection radio frequency power source (5) output end；
The lower part of coaxial feeder (2) and metal antenna (1) are each attached in vacuum chamber ontology (6), the axis of coaxial feeder (2)
The heart is overlapped with the center line of vacuum chamber ontology (6)；
Vacuum chamber is additionally provided with the chamber (10) being recessed inwardly, and the open side of the chamber is located at the top of vacuum chamber, concaves
Sunken chamber (10) and vacuum chamber is separate structure and sealed connection, and the lower part of coaxial feeder (2) and metal antenna (1) are equal
It is fixed in the chamber of sunken inside.
2. the device of using plasma modulation enhancing miniaturization omni-directional antenna electromagnetic radiation according to claim 1,
It is characterized in that, the chamber being recessed inwardly (10) and vacuum chamber are tightly connected using sealant or mechanical fastening device.
3. the dress of using plasma modulation enhancing miniaturization omni-directional antenna electromagnetic radiation according to claim 1 or 2
It sets, which is characterized in that the chamber (10) being recessed inwardly is realized using quartz glass tube.
4. the dress of using plasma modulation enhancing miniaturization omni-directional antenna electromagnetic radiation according to claim 1 or 2
It sets, which is characterized in that the metal antenna (1) is realized using monopole antenna, dipole antennas or PCB antenna.
5. the dress of using plasma modulation enhancing miniaturization omni-directional antenna electromagnetic radiation according to claim 1 or 2
It sets, which is characterized in that discharge electrode (4) is realized using hollow copper tubing.
6. the device of using plasma modulation enhancing miniaturization omni-directional antenna electromagnetic radiation according to claim 5,
It is characterized in that, water flowing in hollow copper tubing, cools down hollow copper tubing using water cooling.
7. the dress of using plasma modulation enhancing miniaturization omni-directional antenna electromagnetic radiation according to claim 1 or 2
It sets, which is characterized in that argon gas is full of in vacuum chamber ontology (6).
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| CN110311223B (en) * | 2019-07-25 | 2021-09-24 | 哈尔滨工业大学 | Signal enhancement type plasma stealth antenna window |
| CN112584595A (en) * | 2019-09-30 | 2021-03-30 | 中国科学院大连化学物理研究所 | Device for activating getter and enhancing absorption rate of getter by radio frequency discharge plasma |
| CN112584597A (en) * | 2019-09-30 | 2021-03-30 | 中国科学院大连化学物理研究所 | Device for activating large-volume getter and enhancing adsorption rate by heating and radio frequency discharge plasma |
| CN111293411B (en) * | 2020-02-14 | 2021-04-02 | 哈尔滨工业大学 | Tunable, high-resolution and multi-band enhanced plasma generating device |
| CN111997853A (en) * | 2020-06-05 | 2020-11-27 | 中国科学院合肥物质科学研究院 | Near space environment air suction type radio frequency plasma propeller |
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| US5434353A (en) * | 1992-12-11 | 1995-07-18 | Max-Planck-Gesellschaft Zur Foerderung Der Wissenschaften E.V. Berlin | Self-supporting insulated conductor arrangement suitable for arrangement in a vacuum container |
| GB2317265A (en) * | 1996-09-13 | 1998-03-18 | Aea Technology Plc | Radio frequency plasma generator |
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